Node Connectivity
There are 43 nodes that can be used as successor
for a node with an output port of type 
GraphCollection.
NoOp (Generic Port)
A “no operation” node.
Aggregates
Counts all nodes and edges per graph in the collection.
Combine
Creates the union/intersection/difference of two graph collections.
Graphs -> Graph
Combines all graphs in a collection into one logical graph.
Limit
Limits the number of graphs in a collection to the specified maximum.
Select
Filter logical graphs from a graph collection based on their associated graph head.
CSV DataSink
Writes Gradoop graphs as CSV into a directory.
DOT DataSink
Writes Gradoop Graphs as Graphviz DOT into a file.
Fusion
The general idea of this operator is that everything that appears in the pattern graph is fused into a single vertex into the search graph.
Graph Heads Output
Shows id, label and properties for each graph head in a table view.